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Wednesday, May 24, 2017

Monthly Archives: September 2010

Ungrounded Electrical Systems! Ungrounded photovoltaic (PV) systems? What is the world coming to?

A Little History Actually the United States is catching up to the rest of the world, which has, for the most part, been using ungrounded...

Electrically Charged Public Transportation

In 1996, a new Article 625, Electric Vehicle Charging System Equipment, was added to theNational Electrical Code(NEC) in anticipation of new technology in the...

EVs, PHEVs and the Electric Car Revolution — It’s not your parent’s old hand-me-down

Remember when we were kids, and dreams of the time when we could fly in our cars like George Jetson filled our thoughts on...

Electrical Code for the Combination Inspector, Part I

The combination inspector is an integral part of the inspection process in many inspection agencies across the country, including the entity for which I...

Ground-Fault Protection for Marinas and Boatyards

Two young boys are excited about being at the lake for the first time that summer. While the parents unload the car, they quickly...

Smart Grid Implementation — Strategies for Success

Executive Summary This report identifies and analyzes four immediate challenges for Smart Grid implementation: smart consumers, Smart Grid cybersecurity, Smart Grid interoperability, and smart transmission....

Local Code Adoption Challenges

Keeping up with local codes can pose serious challenges for electricians and inspectors, as some states adopt codes locally — not statewide. In some...

Motor Supply Conductors

It’s Complicated — you’ve probably seen this witty movie about divorce. Motor wiring rules are complicated too, but not nearly as amusing as the...

Driving Toward the Future

It seems that automobiles have been an industrial harbinger. More than 100,000 patents were filed in the 19th and 20th centuries and a worldwide...

Luminaire Ballast Retrofits and Conversions — How Does that Effect the Luminaire Listing?

Question: Is it permitted as part of the Listing of a luminaire to retrofit a T12 ballasted fluorescent luminaire with a T8 ballast and lamp...
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